2640055564 has 12 divisors (see below), whose sum is σ = 4665841488. Its totient is φ = 1306958000.

The previous prime is 2640055547. The next prime is 2640055597. The reversal of 2640055564 is 4655500462.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3266992 + ... + 3267799.

It is an arithmetic number, because the mean of its divisors is an integer number (388820124).

Almost surely, 2^2640055564 is an apocalyptic number.

It is an amenable number.

2640055564 is a deficient number, since it is larger than the sum of its proper divisors (2025785924).

2640055564 is a wasteful number, since it uses less digits than its factorization.

2640055564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6534896 (or 6534894 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 2640055564 is about 51381.4710182572. The cubic root of 2640055564 is about 1382.0943421654.

The spelling of 2640055564 in words is "two billion, six hundred forty million, fifty-five thousand, five hundred sixty-four".